Том 59, № 12 (2016)

The identification of nonclinkering and poorly clinkering coal suited to industrial use is of great importance. The classification of such coal by applicability is discussed. Criteria are needed for the selection of dual-purpose coals, with both fuel and nonfuel uses, within the framework of State Standard GOST 25543–2013.

Coke battery 5 at OAO Altai -Koks, which went into operation in October 2006, is one of the most powerful and advanced in Russia and its immediate neighbors. Therefore, operational experience at this coke battery is of great value for other coke plants.

The thermal destruction of phenolic resin in coal tar pitch at 320–420°C in a batch reactor is studied. The destruction products of the phenolic resin are identified by gas chromatography-mass spectrometry. The characteristics of coal tar pitch are determined after the destruction of the phenolic resin.

The paper focuses on the problem of selecting the optimal topology for the water-gas shift process for the subsequent synthesis of methanol and higher alcohols. The process uses synthesis gas produced by lignite gasification. The proposed methodology employs the information approach to the creation of highly organized systems in chemical technology, so that optimization can be considered for the process of adding elements to the system step-by-step based on analysis of the organization criteria. The optimal solution is to combine gasification with two-stage high-temperature conversion on the basis of a topology in which two-stage heating precedes the first stage so as to ensure the required optimal temperatures. The optimal conversion topology is integrated with gasification to form a unified system, so as to ensure the required heating of the gasification agents.

Methods of determining the carcinogenicity of carbon-bearing binders in terms of their benzo[a]pyrene content and the benzo[a]pyrene emissions in binder carbonization at temperatures up to 850°C are considered. In the laboratory, CARBORES-T and CARBORES-P binders with reduced benzo[a]pyrene content are studied, as well as the industrial carbon pitch from which they are derived. It is found that predicting the carcinogenicity of carbon-bearing binders in terms of their benzo[a]pyrene content is unsatisfactory, largely because the formation and emission of benzo[a]pyrene on binder heating is ignored. Quantitative determination of the benzo[a]pyrene emission in the carbonization of the binders may be regarded as a more reliable and more universal method. It may be used to compare the carcinogenicity of products derived from coal and petroleum, as well as binders that do not contain benzo[a]pyrene.